Python结束括号错误

Question

invalid syntax

我正在关注此tutorial，但当我到达** kwargs时，我收到此错误（上图）

def greet_me(**kwargs):
   if kwargs is not None:
    for key, value in kwargs.iteritems():
        print "%s == %s" %(key,value)

>>> greet_me(name="yasoob")
name == yasoob